UBUNTU-CVE-2026-48715 (CVE-2026-48715)
Vulnerability from osv_ubuntu – Published: 2026-06-19 20:16 – Updated: 2026-06-29 11:35 – Source website
VLAI
Details
radvd is a router advertisement daemon for IPv6. Prior to version 2.21, the radvdump utility shipped with radvd contains a stack buffer overflow in the Route Information option parser. When processing a crafted ICMPv6 Router Advertisement, print_ff() copies up to 2032 bytes from attacker-controlled packet data into a 16-byte struct in6_addr on the stack, overflowing by up to 2016 bytes. Note that the main radvd daemon is not affected by the vulnerability. Version 2.21 patches the issue.
Severity
8.8 (High)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "radvd",
"binary_version": "1:1.9.1-1.1ubuntu2"
}
],
"priority_reason": "This is only a denial of service in the radvdump utility"
},
"package": {
"ecosystem": "Ubuntu:14.04:LTS",
"name": "radvd",
"purl": "pkg:deb/ubuntu/radvd@1:1.9.1-1.1ubuntu2?arch=source\u0026distro=trusty"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:1.9.1-1.1ubuntu2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "radvd",
"binary_version": "1:2.11-1"
}
],
"priority_reason": "This is only a denial of service in the radvdump utility"
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "radvd",
"purl": "pkg:deb/ubuntu/radvd@1:2.11-1?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:2.11-1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "radvd",
"binary_version": "1:2.16-3"
},
{
"binary_name": "radvdump",
"binary_version": "1:2.16-3"
}
],
"priority_reason": "This is only a denial of service in the radvdump utility"
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "radvd",
"purl": "pkg:deb/ubuntu/radvd@1:2.16-3?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:2.16-3"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "radvd",
"binary_version": "1:2.17-2"
},
{
"binary_name": "radvdump",
"binary_version": "1:2.17-2"
}
],
"priority_reason": "This is only a denial of service in the radvdump utility"
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "radvd",
"purl": "pkg:deb/ubuntu/radvd@1:2.17-2?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:2.17-2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "radvd",
"binary_version": "1:2.18-3build2"
},
{
"binary_name": "radvdump",
"binary_version": "1:2.18-3build2"
}
],
"priority_reason": "This is only a denial of service in the radvdump utility"
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "radvd",
"purl": "pkg:deb/ubuntu/radvd@1:2.18-3build2?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:2.18-3build1",
"1:2.18-3build2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "radvd",
"binary_version": "1:2.19-1ubuntu1"
},
{
"binary_name": "radvdump",
"binary_version": "1:2.19-1ubuntu1"
}
],
"priority_reason": "This is only a denial of service in the radvdump utility"
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "radvd",
"purl": "pkg:deb/ubuntu/radvd@1:2.19-1ubuntu1?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:2.19-1",
"1:2.19-1ubuntu1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "radvd",
"binary_version": "1:2.20-1"
},
{
"binary_name": "radvdump",
"binary_version": "1:2.20-1"
}
],
"priority_reason": "This is only a denial of service in the radvdump utility"
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "radvd",
"purl": "pkg:deb/ubuntu/radvd@1:2.20-1?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:2.20-1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "radvd",
"binary_version": "1:2.20-1build1"
},
{
"binary_name": "radvdump",
"binary_version": "1:2.20-1build1"
}
],
"priority_reason": "This is only a denial of service in the radvdump utility"
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "radvd",
"purl": "pkg:deb/ubuntu/radvd@1:2.20-1build1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:2.20-1",
"1:2.20-1build1"
]
}
],
"aliases": [],
"details": "radvd is a router advertisement daemon for IPv6. Prior to version 2.21, the `radvdump` utility shipped with radvd contains a stack buffer overflow in the Route Information option parser. When processing a crafted ICMPv6 Router Advertisement, `print_ff()` copies up to 2032 bytes from attacker-controlled packet data into a 16-byte `struct in6_addr` on the stack, overflowing by up to 2016 bytes. Note that the main `radvd` daemon is not affected by the vulnerability. Version 2.21 patches the issue.",
"id": "UBUNTU-CVE-2026-48715",
"modified": "2026-06-29T11:35:22Z",
"published": "2026-06-19T20:16:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-48715"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-48715"
},
{
"type": "REPORT",
"url": "https://github.com/radvd-project/radvd/security/advisories/GHSA-52px-gh9p-m379"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
},
{
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-48715"
]
}
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
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- Not confirmed: The user expressed doubt about the validity of the vulnerability.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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